Disable coupon discount rules will work (Translation conflict resolve)
Resolve translation conflicts for coupon discount rule disablement.
add_filter('advanced_woo_discount_rules_notice_on_remove_coupon_while_having_a_discount', function( $msg, $coupon_code){
return sprintf(__('Sorry, it is not possible to apply coupon "%s" as you already have a discount applied in cart.', 'woo-discount-rules'), $coupon_code);
},10, 2);